This Instructable shows you how to build a lighter-based 12v battery trickle charger made from a laptop power supply, a LM317T regulator, and an Altoids tin (and some other misc components).
Car Battery Charger from Spare Parts in Mint Tin
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Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. And he has a new best-of writing collection and “lazy man’s memoir,” called Borg Like Me.
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I have seen from the post an amazing invention. From the power source of a laptop we have now a charger. From whatever little I have seen it is making me more and more thrilled. I always liked to invent things and you are providing an opportunity to learn.
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